A186861 - OEIS

A186861 as a simple table

n	a(n)
1	1
2	4
3	0
4	9
5	12
6	0
7	16
8	40
9	24
10	0
11	25
12	84
13	160
14	24
15	0
16	36
17	144
18	408
19	496
20	0
21	0
22	49
23	220
24	768
25	1764
26	1208
27	0
28	0
29	64
30	312
31	1240
32	3768
33	6712
34	2240
35	0
36	0
37	81
38	420
39	1824
40	6508
41	17280
42	22672
43	2984
44	0
45	0
46	100
47	544
48	2520
49	9984
50	32520
51	74072
52	68272
53	2384
54	0
55	0
56	121
57	684

[1,4,0,9,12,0,16,40,24,0,25,84,160,24,0,36,144, 408,496,0,0,49,220,768,1764,1208,0,0,64,312,1240, 3768,6712,2240,0,0,81,420,1824,6508,17280,22672, 2984,0,0,100,544,2520,9984,32520,74072,68272,2384, 0,0,121,684]